Advertising-machine.



P. C. SCOTT.

ADVERTISING MACHINE.

APPLICATION FILED APB..12, 1913.

IN VH1 TOR 570/61 500W 2 SHEETSSHEET 1.

Patented June 23, 1914.

w & WM 7 1 s a .r 0 m m 1 G ATTORNEYS P C. SCOTT.

ADVERTISING MACHINE. APPLICATION FILED APR. 12, 1913.

Patented June 23, 1914.

2 SHEETS-SHEET 2.

INVENTOR @6077 WITNESSES ATTORNEYS smrss ma -T orricn mm c; score, ornurnm new; I

' msmsxndmenmn m nace citizen of the United. States,- anoh a resident ia of: Eunrlee village, inthe-county or Dou ie;

and: State. of Nebraska, have invented a new and useful? Improvement inAdvertising liim chines, oi which: the following is a: specifics.-

.- My invention is gmimprovement in aidivertising machines, and has forits object the of: a: machine at the character specified, adapted to -bearranged ingpnblic places as for instance, in street. cars and the like,wherein: a contain or band is provided having a series of advertisementson one face, and wherein: mechanism is provided for moving the curtainin such manner that the advertisements will be displayed in; sequence,each beinggpresented to view, and held in fixed position; for apredetermined length of time and themmovedfi out of position to giveplace to the succeeding adrer tisement, and wherein moansis provided forreversing the direction of movement of the curtain near each end of itstravel,

Inthe drawings'rli-igure 1- is a front view of! the improved machinewith the cover. removcd,1Fig.-.2 is arbottom plan view, Fig. 3. isnanend View, the inclosing casing being in section in both Figs. 2' and 3,and

Fig; 4 is a detail sectional view of one-of the cams and. itsconnections.

The present embodiment of the invention comprises an inclosing'casing 1of'suitahle size and shape; which may be arranged in the desiredposition, and which is provided at one end: over the position tobeoccupied by the curtain with an opening covered by a. sheet oftransparent material as for instance, a pane of glass vthrough which theadvertisements lobe exhibited. will appear.

The band or curtain 2 upon which the series ofadvertisements or otherreading matter is to be placed, is mounted upon a pair 05 windingrollers 35 and 4, the ends cf the band being attached to the saidrollers in any suitable manner inorder that the said curtainmay -bewound thereon. Each ofthesaid. rollers 3 and 1 is. provided withtrunnions 5 and 6 respectively, journal'ed in supporting brackets 7secured. to the back of the casing and extending forwardly therefrom asshown more particularly in Fig. 2.

A display roller 8 is arranged adjacent to each of the Winding rollers 3and 4 and on Specification oil Iieftersratanr;

Agplieatiolflled Ayn-1251913. Serial F0. 760,665.

PatentedJune-23J914.

the outer side thereof, each.- of the said dis= rollers: havingtrunnionsor journal pmsQ-ymimaled in extensions 10 in the said bnckem-7.' Each of the dis layroll'ers is wronged adjacent to the e wall of thecasing, as shown. in Fig. 3,. so that the band 2* entends pra'cticnliyfrom one side of the casing to. the other. i

' The display mikes are also arri'mged fxnther finiward' than thewinding-rollers, so that the outeror display'f-ace of the band will beadincent to the. transparent material, and adjacent to -the front 015the casing; The ends of the band pass over the display and themrearwzirdlyand inwardly to theirconnectionwith the winding rollers;

pollen 4* and a 1'1 securedto the trunnion of the said roller betweenthe end of the roller. and the bracket. 7., and the said a stub shaft 13jom'neled inthe bracket 7 and. provided on the opposite side of'thebracket from the piniom with a; sprocket Wheel-1 1.. On inner trunnionfiof the windtheneto on the opposite side of the bracket 7' from theroller; and the said bracket 7 is extended toward the Winding roller 3,as shown more particularly in Fig. 1.

The inner side edge of the band 2'. is 511 ported and guided between thedisplay m the said mllers, by upper and lower guide plates 15,..eachplate having a central open.- ing 16 at the edge ofthe curtain or bandand the two plates are secured to and supported brackets 1-7 extendingforwardly from the bottom of the casing. Each of the said guideplates-1P5 is recessed on its inner face topermit the passage of a;series of buttons 18, the said buttons or stops being secured to theinner edge of. the band or curtain 2 at intervals, corresponding to. thearrangement and. spacing of the display matter. That is, each of thesaid buttons: 01: sto s is so. arranged that. when; the button or t estop engages mechanism to be described later, and arranged at the recess1610fthe plates,-the display matter corresponding to the button or stop.will be in display position before the opening of the casing.

An 818012130" motor 19 is providedfor operatingthe. display mechanism,the said'motor being supported by an annular support 20,. secured; tothe bottom of the casing as This roller3 is of greater length than the'ers and at approximately half way between pinion meshes with a similarpinion 1191v on 'i-ng roller 4- is a sprocket wheel 15, secured a sleeve38 on the shaft'27, and a clutch.

shown at 21, and binding posts 22 are connected with the side of thecasing 1 adjacent to the motor for receiving the line wires 23 thatsupply the current to the motor. The binding posts are connected withthe motor, and a switch may be-arranged at any desired point forconnecting the motor with the line wires.

The shaft 24 of the motor is provided with a worm 25, which meshes witha worm wheel 26 on a shaft 27 journaled in supporting brackets 28 and 29and in an extension of the bracket 7. A worm 30 is secured on the saidshaft adjacent to the Worm wheel 26 and the said worm meshes with a wormwheel 31 on a stub shaft 32 journaled in bearing lugs 29 extendinglaterally from the bracket 29. The stub shaft is provided with a worm33, which meshes with a worm wheel 34 on a countershaft 35 journaled inthe brackets 28 -29, and the extension of the bracket .7 parallel withthe shaft 27 The sprocket wheel 15 of the display roller 4 is connectedby a sprocket chain not shown to a sprocket wheel 36 arranged on theshaft 27 in a manner to be described, and the sprocket wheel 14 of thewinding roller 3 is connected by means of a sprocket chain not shownwith the sprocket wheel 37 arranged on the same shaft 27. The sprocketwheels 36 and 37 are journaled on section 39 is secured toothe sleeve.The sprocket wheel 36 is provided with a clutch section 40 and thesprocket wheel 37 is provided with a clutch section 41. A clutch 42 iskeyed to the sleeve 38 and is movable longitudinally on the said sleevebetween the clutch sections 40 and 41, and one arm 43 of an elbow leverhas a fork engaging an annular groove of the said clutch 42. The elbowlever is pivoted to a lug 44 on the extension of the bracket 7 and theother arm 45 of the said elbow lever has an opening through which passesthe end of a rod 46, to be later described.

It will be evident that when the clutch 42 is moved toward the sprocketwheel 36, the said sprocket wheel will be clutched to the sleeve 38,while when the clutch is moved toward the sprocket wheel 37, thesaidsprocket wheel 37 will be clutched to the sleeve 38. The sleeve 38rotates always in the same direction, so that the sprocket wheels 14 and15 are likewise moved in the same direction. The sprocket wheel 14 ishowever, indirectly connected to the winding roller 3, so that the saidwinding roller 3 moves in the opposite direction to the winding roller4. The sleeve 38 before mentioned, is connected to and disconnected fromthe shaft 27 by means of a clutch 47, the said clutch being keyed to theshaft 27 and movable longitudinally thereon toward and from the clutchsection 39, the said clutch section 39 being secured to the sleeve 38.

A lever 48 is pivoted at 49 to a lug 50 extending laterally from thebracket 29 and the lower end of the said lever is pivotally connected tothe clutch section 47. The up per end of the lever 48 is provided with aroller 51, which is adapted to bear against the rounded end 52 of a triplever 53, pivoted at 54 to the extension of-the bracket 7, and theopposite end of the said lever 53 is forked as shown at 55, the arms ofthe fork fitting on opposite sides of the band or curtain 2 in therecess 16 of the guide plates 15. The said arms 55 are so arranged thatwhenever one of the buttons or stops 18 on the curtain passes into therecess 16 of the guide plates, the said arms will be engaged and thelever will be swun to dis engage the rounded end 52 thereof rom theroller 51 of the lever 48.

The trip lever 53 is normally held with the rounded end thereof inengagement with the roller 51 by means of a spring 56, secured to theextension of the bracket 7 at one end and having the other end engagedwith an opening in a depending lug 57 on the under face of the said triplever. A coil spring 58 is arranged between the,upper end of the lever48 and the extension of the bracket 7 and the said spring normall drawsthe upper end of the lever towar the said extension, that is, the saidspring 58 holds the roller 51 in engagement with the rounded end 52 ofthe lever 53.

When a button or stop 18 strikes the arms 55 of the trip lever 53 andswings the said lever to move the rounded end 52 thereof out ofengagement with the roller 51, the spring 58 swings the lever 48 intothe position of Fig. 2, and moves the clutch 47 out of engagement withthe clutch section 39 of the sleeve 38, thus disengaging the said sleeveand the sprocket wheels 36 and 37 from the shaft 27 and from the motor19. The curtain or band is thus checked in its movement to display theadvertisements or other reading matter corresponding to the button 18.

After the lapse of a predetermined time, the clutch 47 is againconnected with the clutch section 39 of the sleeve 38 by the followingmechanism: An elbow leverconsisting of the arms 59 and 60 is pivoted at61 to the bracket 29 and the arm 60 is provided with a roller whichmoves in engagement with the periphery on a cam 62 on the stub shaft 32before mentioned. Whenever the elbow lever 5960 is moved by the cam,that is, when the high portion of the cam moves the arm 60 upward, thearm 59 is moved toward the lever 48, and the said arm 59 of the elbowlever engages one end of a pin 63 slidable through thebracket 29, theopposite end of the pin being in engagemen-t with the lever 48- betweenthe pivot 49 thereoi and the clutch 47.

When the pin is so moved, the lower end of the lever and the clutch 47are moved toward the clutch se tion 39 of the sleeve 38 and the spring56 at once swings the trip lever 53 into normal position, that is, withthe rounded end 52 thereof in engagement with the roller 51 on the lever48, to hold the said lever 48 with the clutch 47 in engagement with theclutch section 39 of the sleeve 38.

Whenever the clutch 47 is in engagement with the clutch section 39 ofthe sleeve 38, the said sleeve is rotated with the shait 27. Thesprocket wheels 36 and 37 are both journaled loosely on the sleeve 38and the clutch 42 is provided for connecting one or the other of thesaid sprocket wheels to the sleeve 38.

A cam 64 is secured on the counter shaft 35 at the rod 46, and the saidrod 46 has at its lower end a bearing journaled on the shaft 35; Thesaid bearing 65 is provided with diametrically opposite lateral rollers66, the said rollers being in engagement with the periphery oi the cam64. The bearing 65 is held in engagement with the cam by means of acollar 67 on the shaft and coil springs 68 arearranged on the red 46 onopposite sides oi the arm 45 of the elbow lever 43-45. By means of a nut69 at the upper end of the said rod 46', the tension of the springs 68may be regulated. The cam 64 is so arranged that once duringeachcomplete rotation of the countershaft 35, the rod 46 will bemoved'u'pwardly, to swing the elbow lever 43-45, to move the clutch 42longitudinally of the sleeve 88. When the said elbow lever is moved inone direction, the sprocket wheel 36 will be connected to the sleeve 38'while when the elbow lever is moved in the opposite direction, thesprocket wheel 37 will he connected to. the said sleeve 38. I

In operation, current being supplied to the motor, the shaft 27 isrotated continuously in one direction. With the parts arranged as shownin Fig. 1, the sprocket wheel 36 is clutched to the sleeve 38, and thelever 48- is on the pointof being returned to its normal position, thatis, to a position where the clutch 47 will be in engagement with theclutch teeth 39 of the sleeve 38. When the lever is so moved, that is,by the pin 63 and the elbow lever 59-66, the spring 56 will return thetrip lever 53 to normal position, and the said trip lever will; hold thelever 48 with the clutch 47 engaged with the clutch teeth 39 of thesleeve 38. The sprocket wheel 36. is connected to the sprocket wheel 15of the winding roller 4 and the band or certain 2 is moved downwardly inFig. 1, and the said band is wound on the roller 4. The Buttons or steps18 are so arranged that whenever a display,.that is, a section ofadvertising matter or the like, is in position behind the displayopening of the casing 1, a-button or stop 18 will engage the arms 55 ofthe fork of the trip lever 53 and will swing the said lever into theposition of Fig. 1. The spring 58 will 48 is on the said stub shaft. Thetime also depends upon the arrangement of the cam 62, since it is thesaid cam that operates the replacing mechanism, and the said time may beof any desired length, depending upon the said arrangement of the camand the s of the stub shaft. The time during which the clutch 42 remainsin one position, that is, in a position to clutch either the sprocketwheel 36 Or 37 to the sleeve depends upon the speed oi the shaft 35 andthe arrange ment of the cam 64.

In the present construction, the cam 64 moves the rod 46 twice, once ineach dime-- tion during each complete rotation of the shaft 35, and as acon uence shifts the clutch 42 in the same manner duringeach rotation ofthe said shaft. In the present construction the sha'it 35 rotates veryslowly, requiring eight minutes to complete a rota; tion and the lengthof the band is such and the periods of stoppage are such that the entirecurtain will pass from one winding .roller to the other and back againduring this time, that is, duringeight minutes. It is obvious that thearrangement is entirely dependent uponthe length of thecu tain or handand thenumher of displays and the time durin which each display is to beleft 7 on view. he springs 68 on the opposite sides of the arm 45 of theelbow lever 43--45 cushions the movement thereof, so that there is nojar, and so that should the teeth of the clutch be not in directregister with the 7 .115

clutch teeth of the sprocket wheels, there will be no breakage but theclutch will. be

held yieldingl-y until the teeth do register.

Since the sleeve 38 rotates in the same directionat all times, it isneoe saryto. provide means for reversing the movement offthe roller 3,and the pinions 11 and 12 provide this reverse movement. It wili' benoted from an inspection 04 Fig. 1 thatlead 76 connect the 22' with themotor.

It will he noticed from an inspectionof Fig.2- that a spring 76* isarranged between supportig bracket 29, and the movable.

crutch section 47, the said spring-"acting normall to, move the clutchsection'toward the a pair of supporting rollers in the case for casehaving an opening t section 39. When the lever 48 is moved to connectthe section 47 with the section 39 of the clutch, the said lever 48 doesnot positively move the section 47 into engagement with the section 39,"The-said lever merely moves the clutch section 47 out of engageone facewith a plurality of sections of dis? play matter arranged in spacedrelation, a rough wh ch a section of the display matter may be visible,

supporting the band or curtain behind the opening, a winding rolleradjacent to each display roller, a motor, a driving shaftoperatedby themotor, a Sleeve journaled on the driving shaft, 9, pair ofsprocketwheels journaled on. the sleeve, a driving connection betweenone of the sprocket wheels and one of the winding rollers, a stub shaftjournaled adjacent to thesother-winding roller and parallel therewith, adriving connection between the stub shaft and the winding roller, asprocket wheel on the stub shaft, a driving connection between the saidsprocket wheel and the other sprocket wheel on the sleeve, aclutch-feathered on the sleeve and movable between the sprocket wheelsof. the sleeve to alternately connect said wheels to the sleeve, aclutch for connecting the sleeve to the drivin shaft, a lever for oerating the said clutc a s ring engaging t e lever and normally hol ingthe lever with the clutch released, a trip lever pivoted intermediam itsends adjacent to the lever, a spring'normally holding the said triplever with one of its ends in engagement with the clutch lever to holdthe said clutch lever with the clutch in engagement with the sleeve,said trip lever havin a fork extending on opposite sides of the and orcurtain, a stop on the band or curtain adjacent to each of the sectionsof display matter and in position to engage and swing. the trip leverwhen the said section of display matter is behind the display opening, aspring normally holding the trip lever in engagement with the clutchlever, a countershaft driven by the driving shaft, means operated by thecounter-shaft at regular intervals for swinging the Clutch lever intonormal position with the clutch connecting the sleeve to the drivingshaft, a cam shaft driven by the countershaft, a"- cam on the cam shaft,an elbow lever pivoted adjacent tothe cam shaft and having an armconnected with the clutch feathered on the sleeve, the other arm havingan opening, a rod extending through the opening and having a bearingencircling the cam shaft, said bearing having rollers for engagement bythe cam to move the rod longitudinally at predetermined intervals, asprm on the rod on each side of the arm of t e e ow lever, and a nut forvarying the tension of the said s r' W v 2. A device of tlie gharacterspecified, comprising a band or curtain'provided on one face with aplurality of sections of display matter arranged in spaced relation, ,0.case havinganopening through which a secition ofthe display matter maybevisible a pair of supporting rollers in the, case or supporting theband, or curtain the opening, a winding rolleraadjacentto each displayroller, .a motor, a driving shaft operated by the motor, a sleevejournaled on the drivin shaft, a pair of rocket wheels journa ed on thesleeve, a iving connection between one of the sprocket wheels and oneofthe winding1 rollers, a stub shaft journaled adjacent to t 'ing rollerand parallel therewith, a driving e other windconnection between thestub shaft and the winding roller, 9. sprocket wheel on the stub shaft,a driving connection between the said sprocket wheel and the othersprocket wheel on the sleeve, a clutch feathered on the sleeve andmovable between the sprocket wheels of the sleeve to alternately'connectsaid wheels to the sleeve, a clutch for connecting the sleeve to thedrivin shaft, a lever for operating the said clutc a spring on aging thelever and normally holding the ever with the clutch released, a triplever ivoted intermediate its ends adjacent to t e lever, a springnormally holding the said trip lever with one of its ends in engagementwith the clutch lever to hold the said clutch lever with the clutch inengagement with the sleeve, said trip lever havin a fork extending onopposite sides of the and or curtain, a stop on the band or curtainadjacent to each of the sections of display matter and in position toengage and swing the trip lever when the said section of display matteris behind the display opening, a spring normally'holding the trip leverin engagement with the clutch lever, a countershaft driven by thedriving shaft, means operated by the countershaft at regular intervalsfor swinging the clutch lever into normal position with the clutchconnecting the sleeve to the driving shaft, means for moving the clutchfor alternately connecting the sprocket wheels with the sleeve, means onthe countershaft shaft, a pair of sprocket Wheels journaled .on

the sleeve, a direct driving connection between one of the sprocketwheels and one of the winding rollers, an indirect connection betweenthe other sprocket wheel and the other winding roller, a clutchfeathered on the sleeve and movable between the sprocket wheels of thesleeve to alternately connect said wheelsto the sleeve, a clutch .forconnecting the sleeve to the driving shaft, a lever for operating thesaid clutch, a spring engaging the lever and normally holding the leverwith the clutch released, a trip ever pivoted intermediate its endsadjacent to the lever, a spring normally holding the said trip leverwith one of its ends in engagement with the. clutch lever to hold thesaid clutch lever with the clutch in engagement with the sleeve, saidtrip lever iaving a fork extending on opposite'sides of the band orcurtain, a stop on the band or curtain adjacent to each of the sectionsof display matter and in position to engage and swing the trip leverwhen thetsaid section of display matter is behind the display opening, aspring normally holding the trip lever in engagement with the clutchlever, a countershaft driven by the driving shaft, and means operated bythe countershaft at regular intervals for swingingv the clutch leverinto normal position with the clutch connecting the sleeve to thedriving shaft.

4. A device of the character specified, comprising a band or curtainprovided on one face with a plurality of sections of display matterarranged in spaced relation, a case having an opening through which asection of the display matter may be visible, a pair of supportingrollers in the case for supporting the band or curtain behind theopening, a winding roller adjacent to each display roller, a motor, adriving shaft operated by the motor, a sleeve j-ournaled onthe drivingshaft, a pair of sprocket wheels journaledion the sleeve, adirectdriving connection between one of the sprocket wheels and one ofthe winding rollers, an indirect connection between the other sprocketwheel and. the other winding roller, a clutch feathered on the sleeveand movable between the sprocket wheels of the sleeve to alternatelyconnect said wheels to the sleeve, a. clutch for connecting the sleeveto the driving shaft, a lever for operating the said clutch, a springengaging the lever and normally holding the lever with the clutchreleased, a trip 1ever pivoted intermediate its ends adjacent to thelever, a spring normally holding the said trip lever with one of itsends in engagement with the clutch lever to hold the said! clutch leverwith the clutch in engagement withlthe sleeve, said trip lever having afork extending on opposite sides of the band or curtain, a stop on theband or curtain adjacent to .each of the sections of display matter andin position to engage and swing the trip lever 1' when the said sectionof display matter is behind the display opening, a spring normallyholding the trip lever in engagement with the clutch lover, acountershaft driven by the driving shaft, means operated by thecountershaft at regular intervals for swinging the, clutch lever intonormal position with the clutch connecting the sleeve to the drivingshaft, and means operated by the countershaft for moving the clutchfeath- -ered on the sleeve. 1

o. A device of the character specified, comprising a band or curtainprovided on one matter-arranged in spaced relation, a case having anopening through which a-sect-ion of the display matter may be seen, apair of supporting rollers in the case for'supporting a portion of theband or curtain behind the said opening, a winding roller adjacent toeach display roller to which the ends of the band or curtain areconnected,-a motor, a driving shaft driven by the motor, a sleevejournaled on the driving shaft, a pairof sprocket wheels ournaled on thesleeve, a direct driving connection between one of the sprocket wheelsand one of the winding rollers, an-indirect driving connection betweenthe other sprocket wheel and the other winding roller, a clutchfeathered on the sleeve between the sprocket wheels and mo'vi ablebetween the said wheels to alternately connect the wheels to the sleeve,means operzated by the driving shaft for moving the said clutch atpredetermined intervals in oppositerdirections, a yielding connectionbetween the said means and the clutch, aclutch for connecting the sleeveto the driving shaft, a trip lever having at one end a fork betweenwhose arms one edgeof the band or curtain moves, stops on the said edgeof the curtain for engaging the arms of the fork to swing the triplever, said stops being adjacent to the sections of display matter andinposition to engage the triplever when the section adjacent tothe stop isbehind the display opening, a spring normally holding the triplever-approximately perpendicular to the edge of the curtain, a leverconnected with the last-named clutch and adapted to engage the oppositeend of the trip lever from the curtain or band to hold the said leverwith the clutch in engagement with the sleeve, a spring acting upon theclutch lever to release the clutch when the trip lever is swung, andmeans operated by the driving shaft for moving the clutch lever againstthe resistance of the spring to connect the clutch with the sleeve atpredetermined intervals.

face with a plurality of sections of display 6. A device of thecharacterspecified, comprising aband or curtain provided on one face with aplurality of sections of display matter arranged in spaced relation, acase having an opening through which a section of the display matter maybe seen, a pair of supporting rollers in the case for sup orting aportion of the band or curtain behind the said opening, a winding rolleradjacent to each display roller to which the ends of the band or curtainare connected, a motor, a driving shaft driven by the motor, a sleevejournaled on the driving shaft, a pair of sprocket wheels journaled onthe sleeve, a direct driving connection between one of the sprocketwheels and one of the winding rollers, an indirect driving connectionbetween the other sprocket wheel and the other wind ing roller, aclutchfeathered on the sleeve between the sprocket wheels and movable betweenthe said wheels to alternately connect the wheels to the sleeve, meansoperated by the driving shaft for moving the said clutch atpredetermined intervals in opposite direetions, a trip lever pivotedadjacent to one edge of the band or curtain, stops on the said edge ofthe band or curtain for engaging and swinging the lever when the displaymatter adjacent to the stop is in position at the display opening, aclutch for connecting the sleeve to the driving shaft, a spring normallyacting to disengage the clutch, a connection between the trip lever andthe clutch for holding the clutch in closed position, when the triplever is in normal position,

. and means operated by the driving shaft for moving the clutch intoclosed position against the resistance of the spring at predeterminedintervals.

7. A device of the character specified, comprising a band or curtainprovided on one face with a plurality of sections of display matterarranged in spaced relation, a case having an opening through which asection of the display matter may be seen, a pair of supporting rollersin the case for supporting a portion of the band or curtain behind thesaid opening, a winding roller adjacent to each display roller to whichthe ends of the band or curtain are connected, a motor, a driving shaftdriven by the motor, a sleeve journaled on the drivlng shaft, a pair ofsprocket wheels journaled on the sleeve, a direct driving connectionbetween one of the sprocket wheels and one of the winding rollers, anindirect driving connection between the other sprocket wheel and theother winding roller. means operated by the driving shaft atpredetermined intervals for alternately clutching-the sprocket wheels tothe sleeve, means operated by the driving shaft for clutching the sleeveto the shaft at predetermined intervals, a spring normally acting torelease the sleeve from the shaft,

1 '1 a trip lever for retaining the sleeve clutched to the shaft, a stopon the band or curtain adjacent to each of the sections of displaymatter, the trip lever being in position for engagement by the stops toswing the same to permit the spring to release the clutch.

8. A device of the character specified, comprising a pair of windingrollers, a band or curtain having its ends connected with the windingrollers and winding thereon, a driving shaft, a sleeve loose on thedriving shaft, a pair of sprocket wheels loose on the sleeve, a directdriving connection between one of the said wheels and one of the windingrollers, an indirect driving connection between the other sprocketjwheeland the other winding roller, means operated by the driving shaft atpredetermined intervals for alternately clutching the sprocket wheels tothe sleeve, means operated by the driving shaft for clutching the sleeveto the shaft at predetermined intervals, a spring for releasing theclutching means of the sleeve and the shaft, means for normally holdingthe sleeve clutched to the shaft, and stops arranged in spaced relationon the band or curtain and adapted to engage the said lastnamed means torelease the clutch.

9. A device of the character specified, comprising a air of windingrollers, a band having its en s connected with the winding rollers andwinding thereon, a driving shaft, a sleeve loose on the driving shaft,sprocket wheels journaled loosely on the sleeve, a direct drivingconnection with one wheel and one of the winding rollers, an indirectdriving connection between the other wheel and the other r'oller, meansoperated by the driving shaft at predetermined intervals for alternatelyclutching the sprocket wheels to the sleeve, means 0 erated by thedriving shaft for clutching t e sleeve to the shaft at predeterminedintervals, normally active means for releasing the clutch, means forrestraining the operation of the said releasing means, and means on theband arranged at predetermined intervals for releasing the restrainingmeans.

10. A device of the character specified, comprising winding rollers, aband winding its ends on the rollers, a continuously rotating drivingshaft, a sleeve on the shaft, means operated by the driving shaft foralternately connecting the sleeve directly to .one of the rollersandindirectly to the other roller, means operated by the driving shaftfor clutching the sleeve to the said shaft at predetermined intervals,normally active means for releasing the sleeve from the driving shaft,means for restraining the operation of the said releasing means, andmeans on the band for engaging the said restraining means atpredetermined intervals to release the slceve from the shaft.

11. A device of the character specified, comprising winding rollers anda band sleeve from the driving shaft, a trip for re- 10 straining theoperation of the said releasing means, and means on the band foroperating the trip at predetermined intervals.

PAUL (J. soorr;

\Vitnesses:

CLAY H. THOMAS, AUGUSTUS D. WILLIAMS.

